Steel needle for grain and corn binders



arch 24, 1936. KOWALSKY STEEL NEEDLE FOR GRAIN AND CORN BINDERS 2 Sheets-Sheet 1 Filed July 31, 1935 A. KOWALSKY 2,034,910

STEEL NEEDLE FOR GRAIN AND CORN BINDERS March 24, 1936.

2 Sheets-Sheet 2 Filed July 51, 1935 Patented Mar. 24, 1936 STTS STEEL NEEDLE FOR GRAIN AND CORN BINDERS tion of New Jersey Application July 31, 1935, Serial No. 33,944

11 Claims.

The invention relates to binding mechanisms for harvesters, and particularly to an improved construction of binder needle.

These needles heretofore have been cast in one piece with the result that they were unusually heavy and expensive to produce.

The main object of the invention is to provide an improved binder needle construction for use in harvesters, such as grain binders and corn binders.

Another object is to provide an improved binder needle of light weight and possessing the necessary strength and rigidity.

Another object is to provide an improved binder needle of sheet metal construction.

Still another object of the invention is to provide a sheet metal needle for the purposes stated embodying features of construction that will facilitate its manufacture.

Other important objects of the invention will become apparent to those skilled in this art as the disclosure is more fully made.

Binder needles comprise a shank, a web, and a point. Briefly in the present improvements these parts which were formerly cast in one piece are now fabricated as separate pieces. The shank may still be cast or forged, while the web is formed as an arcuate sheet steel plate having a flange along one marginal edge. The point is similarly formed of sheet steel as an arcuate channel shaped piece. The two sheet metal parts are interfitted end to end to form a continuous arcuate needle which is secured to the free end of the shank, preferably by welding. Further, the sheet metal structure lends itself to the use of special means for guiding the strand of twine therethrough in a manner to prevent tearing of the twine, which is a decided advantage over the cast needle construction.

In the accompanying drawings Figures 1 to 7 inclusive illustrate a steel needle for use in grain binders, and Figures 8 to 14 inclusive illustrate a modified form of needle construction for use in corn binders.

In these drawings illustrating practicable examples of the invention Figure 1 is a side elevational view of the improved steel needle construction for a grain binder;

Figure 2 is a detached elevational view of the steel web member of the needle per se;

Figure 3 is a similar detached elevational view of the needle point per se;

Figure 4 is an end elevational view of the structure shown in Figure 1;

Figure 5 is a detailed cross sectional View through the needle point taken along the line 55 of Figure 1 looking in the direction of the arrows;

Figure 6 is a cross sectional view through a portion of the web part taken along the line 6-6 of Figure 1 looking in the direction of the arrows;

Figure 7 is a detailed cross sectional View taken along the line 17 of Figure 1 looking in the direction of the arrows to illustrate the assembly of the Web to the needle shank;

Figure 8 is a general side elevational view of the assembled steel needle modified for use with the binding mechanism of a corn binder;

Figure 9 is an end elevational view of the needle shown in Figure 8;

Figure 10 is a plan view of the detached steel Web portion of the needle;

Figure 11 is a similar view of the detached point for the corn binder needle;

Figure 12 is a cross sectional view taken along the line I2-I2 of Figure 8 showing the manner of assembling the web with the shank;

Figure 13 is a cross sectional view through the point of the needle taken along the line l3-I3 of Figure 8; and,

Figure 14 is a cross sectional view through the web taken along the line l4|4 of Figure 8.

Looking at Figures 1 to '7 inclusive it will be seen that the improved steel grain binder needle embodies a shank piece l5 formed as a casting or forging with one end thereof including a collar It for mounting the same on a shaft that operates the needle in a manner well understood in this art. The shank l5 near the collar l6 carries an eyelet bracket I! for a purpose later to appear.

The web portion of the needle is shown in Figure 2, the same comprising an arcuately shaped flat steel blank 3, the outer arcuate marginal edge of said blank being bent at a rightangle, as at l9 to strengthen the same. The wide end of said plate has a shoulder or edge and an angularly related inner shoulder or edge 2|. This edge 2! is assembled with the free end of the shank l5 by abutting said edge 2| against an undercut shoulder 22 formed in the shank, the parts then being preferably welded together whereby the web I8 is joined to the shank 15.

The point of the needle is shown in Figure 3, the same comprising a fiat steel plate 23 bent back upon itself to be formed as a channel, as shown in Figure 5. This needle has its outer edge arcuately shaped to form continuation of the arcuate outer edge of the web part l8. The upper edge of the point part 23 is indented at one side only to form a shoulder 24, the same side of the channel then being continued to form a tongue extension 25. This shoulder 24 fits snugly against the edge 20 of the web l8 in such a manner that the tongue or extension 25 overlaps the web I8 for some distance as indicated in Figure 1. The edge 20 is thereupon welded to the abutted edge 24 to secure the point 23 to the web I8.

As shown in Figures 3 and 4, the point end 01 the part 23 is formed by bending the sides of the channel closely together and welding them. A stationary roller guide 26 is mounted near the point end of the part 23 and another similar guide 21 is mounted within the channel of the part 23 adjacent its shoulder 24. Further, one side of the channel 23 is bent inwardly as at 28.

In Figures 8 to 14 inclusive a modified form of needle is illustrated for use in corn binders, said construction embodying a shank l5 having a sleeve Hi. The steel plate web part is shown at l8, the shank having an arcuate edge bent to form a strengthening flange I9 said web also including a cut-01f abutment shoulder or edge 20. This web is considerably wider than the web l8 used on the grain binder needle and instead of mounting the shank eyelet on the shank in this instance, said eyelet is shown at IT and is carried on the web plate l8.

The web plate I3 along one edge is welded to the shank l5 as indicated by the crosses in Figure 8.

The needle point is shown at 23, the same also being formed as a channel piece having an upper indented edge 26 and one side of the channel being extended to form a tongue: 25. In assembling the point 23, the edge 25' is brought into abutting relation with the shoulder 29' so that the tongue 25 overlaps the web EB and the parts are then welded together as indicated by the crosses in Figure 8. A stationary roller 26' is mounted at the point end of the plate 23' and another stationary roller 2'! is mounted through the tongue 25 and the web l8, as shown. The web l8, as shown in Figure 12, fits into a notch 22' provided in the end of the shank 15', so as to enable compact assembling of these parts.

From this description it will now be appreciated that an improved steel needle construction for harvesters has been provided which achieves the desirable objects heretofore recited. In the form of Figures 1 to '7, the twine is guided through the eyelet ll past the web 18 and over the roller 21. The twine is then guided through the channel 23 and around the stationary roller guide 26. In the form of Figures 9 to 14 inclusive the twine is threaded through the eyelet l1 along the web l8, over the roller 21', through the channel point 23 and over the roller 25. The resultant construction prevents tearing of the twine as the polished stationary rollers provide a substantially frictionless guide therefor. Further, the twine is protected as it guides through the channel. shaped points 23 and 23. The construction is light weight and cheap to produce. Further the needle is absolutely rigid and does not sacrifice any strength because of its light weight construction.

It is the intention to cover all changes and modifications of the illustrative examples of the improved steel needle herein shown and illustrated which do not in material respect constitute departure from the spirit and scope of the invention.

What is claimed is:

1. A needle for harvester binders comprising a shank, an arcuate needle secured thereto comprising a sheet metal web portion and a channel shaped sheet metal point portion.

2. A needle for harvester binders comprising a shank, an arcuate needle secured thereto comprising a flat sheet metal web secured to the shank, and a sheet metal point portion secured to the web and the shank.

3. A needle for harvester binders comprising a shank, an arcuate needle secured thereto comprising a flat sheet metal web secured to the shank, and a channel shaped sheet metal point having an extension overlapping a portion of the web and secured thereto and to the shank.

4. A needle for harvester binders comprising a shank, an arcuate needle secured thereto comprising a sheet metal web having one end secured to the shank and including a shoulder, a sheet metal point portion having a shoulder to abut the aforementioned shoulder to be welded thereto and to said shank, said point portion including an extended tongue adapted to overlie and be secured to a portion of said web.

5. A needle for harvester binders comprising a shank, an arcuate needle secured thereto comprising a sheet metal webportion and a channel shaped sheet metal point portion having an extension secured to the web and shank, a twine guide roller carried within the channel adjacent the point of the needle, and a second roller carried by the extension adjacent its point of connection to the Web portion.

6. A needle for harvester binders comprising a shank, an arcuate edged needle secured thereto comprising a flat sheet metal web portion secured to the shank and have its arcuate edge bent to form a marginal flange disposed at an angle to the web portion, and asheet metal point portion having an end overlying a portion of the web portion against the flange, said end being secured to the web portion and to the shank.

'7. A needle for harvester binders comprising a shank, an arcuate edged needle secured thereto comprising a flat sheet metal web portion secured to the shank and having its arcuate edge bent to form a marginal flange disposed at an angle to the web portion, and a sheet metal channel shaped point portion having an extended end overlying a portion of the web portion, said end being secured to the web portion and to the shank.

A needle for harvester binders comprising a shank, an arcuate needle secured to the shank comprising a sheet metal web part and a sheet metal point part, said parts being secured to each other and to the shank.

9. A needle for harvester binders comprising a shank, an arcuate needle secured to the shank comprising a sheet metal web part and a sheet metal point part, said parts being secured to each other and to the shank, said web part having a marginal edge bent to form a strengthening flange.

10. A needle for harvester binders comprising a shank, an'arcuate needle secured to the shank comprising a sheet metal web part and a sheet metal point part, said parts being secured to each other and to the shank, said point part being channel shaped and carrying within itself a twine guide roller.

11. A needle for harvester binders comprising a shank, an arcuate needle secured to the shank comprising a flat sheet metal web having a fiange along its arcuate marginal edge and a sheet metal channel shaped point part carrying a twine guide means, said parts being secured to each other and to the shank.

ANDREW KOWALSKY. 

